Saoirse Ronan steps out for the premiere of her new film, The Host, held at ArcLight Cinemas Cinerama Dome in Hollywood on Tuesday night (March 19).

When an unseen enemy threatens mankind by taking over their bodies and erasing their memories, Melanie Stryder (Ronan) will risk everything to protect the people she cares most about — Jared (Max Irons), Ian (Jake Abel), her brother Jamie (Chandler Canterbury) and her Uncle Jeb (William Hurt), proving that love can conquer all in a dangerous new world.

The Host opens on Friday, March 29th.

FYI: Saoirse is wearing a Lanvin dress with EF Collection earrings and a J/Hadley ring.